adidas Ultra Boost 21 Oreo - Black - White - 7.5 UK
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Product Information
Full details
The adidas Ultra Boost 21 Oreo is designed for adult male runners seeking a high-performance trainer that balances daily comfort with responsive energy return. Featuring the iconic Boost midsole technology and a durable Continental rubber outsole, this shoe excels on pavement and urban terrain; however, users should note that the unique Oreo-inspired knit upper may require more frequent cleaning compared to darker, solid-colored models.
All features
| Age Group | adult |
|---|---|
| Colour | Black |
| Gender | Male |
| Shoe Size UK | 7.5 |
| Accent Colour | White |
| Shoe Type | Trainers |
| Series | Ultra Boost 21 |
| Model Part Number | S23708 |
| Brand | adidas |
Extended Product Information
FAQs
Are the Ultra Boost 21 trainers good for wide feet?
The primeknit upper is stretchy and accommodates various foot shapes well, though those with very wide feet may prefer to go up a half size.
Can I use these for marathon running?
Yes, the cushioning system is designed for high-mileage runs and provides significant support for long-distance training.
How often should I replace these shoes?
Generally, running trainers should be replaced every 300 to 500 miles, depending on your running style and surface conditions.
Is the white part of the sole easy to keep clean?
The white boost midsole can be wiped down with a damp cloth and mild detergent to maintain its appearance.
Are these shoes waterproof?
No, these are standard breathable running shoes and are not designed for water resistance.
Do these run true to size?
Most users find that the Ultra Boost 21 fits true to size, but the secure fit of the knit upper may feel snug initially.
Troubleshooting
Sensation of slippage at the heel
Try the 'runner's loop' or 'lock lacing' technique to secure the ankle collar firmly.
Midsole feels stiff after long storage
Take them for a light walk; Boost material is temperature-sensitive and often gains flexibility as it warms up during use.
Surface debris in the knit pattern
Use a dry, soft brush to flick away dirt after the debris has dried to avoid rubbing it into the fabric fibers.
Pros and Cons
Pros
- High-energy return cushioning
- Excellent grip in both wet and dry conditions
- Modern, high-contrast aesthetic
- Durable construction suitable for high-mileage
Cons
- White knit patterns can show dirt easily
- Limited to adult male fit
- Higher price point compared to entry-level trainers
Setup, Compatibility & Care
To ensure the longevity of your adidas Ultra Boost 21, keep these guidelines in mind:
- Fit: Ensure you are wearing the correct size; the primeknit upper is designed to hug the foot for a sock-like fit.
- Cleaning: Use a soft-bristled brush and mild soapy water to spot clean the knit upper. Avoid machine washing, which can degrade the midsole bonding.
- Storage: Allow shoes to air dry naturally after runs in a well-ventilated area away from direct heat sources like radiators, as high heat can warp the Boost foam.